From the article
"Archie Brown's model railway layout took two years to plan and six months to construct. The word enthusiast does not really do justice to level of commitment he devotes to his hobby."
Hard to imagine that all that work took only 6 months. That was quite a project.
That quality of detail and workmanship by UK railway modellers is very common....many people really try to build to a very high standard. From my reading of various UK forums and magazines it appears that individualmodellers in the UK are more likely to attend exhibitions/shows as individual exhibitors than in the US so tend to really try for "exhibition quality" layouts as they say over there.
Here are some links to other layouts built by individuals etc.